20252080

素因数分解:

$2^4\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1699}}^1$

素因数の和:1861

約数の個数: 40

約数和(自身を含む): 47430000

約数和(自身を除く): 27177920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 149, 298, 596, 745, 1192, 1490, 1699, 2384, 2980, 3398, 5960, 6796, 8495, 11920, 13592, 16990, 27184, 33980, 67960, 135920, 253151, 506302, 1012604, 1265755, 2025208, 2531510, 4050416, 5063020, 10126040, 20252080]

約数ペア:

[(1, 20252080), (2, 10126040), (4, 5063020), (5, 4050416), (8, 2531510), (10, 2025208), (16, 1265755), (20, 1012604), (40, 506302), (80, 253151), (149, 135920), (298, 67960), (596, 33980), (745, 27184), (1192, 16990), (1490, 13592), (1699, 11920), (2384, 8495), (2980, 6796), (3398, 5960)]